We are a collective of developers working on the main marketplaces on Nostr, including @npub15dc33..., @npub1nkmta..., @npub1marke..., and @npub1nkfqw.... We've been working on enhancing the interoperability of our projects, and we're now presenting the specification we've developed. It is primarily based on NIP-99, which is very broad in its use cases and has become the most widely adopted NIP for implementing marketplaces. However, NIP-99 lacked conventions necessary for a standard e-commerce experience. Our ultimate goal is to benefit users by providing a more coherent experience across Nostr-based marketplaces.

https://github.com/nostr-protocol/nips/pull/1784